PoissonExample::OpError Struct Reference

Evaluate error. More...

#include <users_modules/basic_finite_elements/poisson/src/PoissonOperators.hpp>

Inheritance diagram for PoissonExample::OpError:

Collaboration diagram for PoissonExample::OpError:

Public Types
typedef boost::function< double(const double, const double, const double)>	UVal
typedef boost::function< FTensor::Tensor1< double, 3 > const double, const double, const double)>	GVal

Public Member Functions
	OpError (UVal u_value, GVal g_value, boost::shared_ptr< VectorDouble > &field_vals, boost::shared_ptr< MatrixDouble > &grad_vals, Vec global_error)
MoFEMErrorCode	doWork (int row_side, EntityType row_type, DataForcesAndSourcesCore::EntData &row_data)
Public Member Functions inherited from PoissonExample::OpBaseRhs< VolumeElementForcesAndSourcesCore::UserDataOperator >
	OpBaseRhs (const std::string field_name)
MoFEMErrorCode	doWork (int row_side, EntityType row_type, DataForcesAndSourcesCore::EntData &row_data)
	This function is called by finite element. More...

Private Member Functions
MoFEMErrorCode	iNtegrate (DataForcesAndSourcesCore::EntData &data)
	Integrate error. More...
MoFEMErrorCode	aSsemble (DataForcesAndSourcesCore::EntData &data)
	Assemble error. More...

Private Attributes
Vec	globalError
	ghost vector with global (integrated over volume) error More...
FTensor::Number< 0 >	NX
FTensor::Number< 1 >	NY
FTensor::Number< 2 >	NZ
FTensor::Index< 'i', 3 >	i
UVal	uValue
	function with exact solution More...
GVal	gValue
	function with exact solution for gradient More...
boost::shared_ptr< VectorDouble >	fieldVals
boost::shared_ptr< MatrixDouble >	gradVals

Additional Inherited Members
Protected Attributes inherited from PoissonExample::OpBaseRhs< VolumeElementForcesAndSourcesCore::UserDataOperator >
int	nbRows
	< error code More...
int	nbIntegrationPts
	number of integration points More...

Detailed Description

Evaluate error.

Definition at line 504 of file PoissonOperators.hpp.

Member Typedef Documentation

GVal

typedef boost::function<FTensor::Tensor1<double, 3> const double, const double, const double)> PoissonExample::OpError::GVal

Definition at line 511 of file PoissonOperators.hpp.

UVal

typedef boost::function<double(const double, const double, const double)> PoissonExample::OpError::UVal

Definition at line 508 of file PoissonOperators.hpp.

Constructor & Destructor Documentation

OpError()

PoissonExample::OpError::OpError	(	UVal	u_value,
		GVal	g_value,
		boost::shared_ptr< VectorDouble > &	field_vals,
		boost::shared_ptr< MatrixDouble > &	grad_vals,
		Vec	global_error
	)

Definition at line 513 of file PoissonOperators.hpp.

      : OpBaseRhs<VolumeElementForcesAndSourcesCore::UserDataOperator>("ERROR"),
        globalError(global_error), uValue(u_value), gValue(g_value),
        fieldVals(field_vals), gradVals(grad_vals) {}

Member Function Documentation

aSsemble()

MoFEMErrorCode PoissonExample::OpError::aSsemble ( DataForcesAndSourcesCore::EntData &  data )

privatevirtual

Assemble error.

Implements PoissonExample::OpBaseRhs< VolumeElementForcesAndSourcesCore::UserDataOperator >.

Definition at line 588 of file PoissonOperators.hpp.

                                                                 {
    MoFEMFunctionBegin;
    // set error on mesh
    data.getFieldDofs()[0]->getFieldData() = sqrt(data.getFieldData()[0]);
    // assemble vector to global error
    CHKERR VecSetValue(globalError, 0, data.getFieldData()[0], ADD_VALUES);
    MoFEMFunctionReturn(0);
  }

doWork()

MoFEMErrorCode PoissonExample::OpError::doWork	(	int	row_side,
		EntityType	row_type,
		DataForcesAndSourcesCore::EntData &	row_data
	)

Definition at line 520 of file PoissonOperators.hpp.

                                                                   {
    MoFEMFunctionBegin;
    nbRows = row_data.getFieldData().size();
    if (!nbRows)
      MoFEMFunctionReturnHot(0);
    nbIntegrationPts = getGaussPts().size2();
    CHKERR iNtegrate(row_data);
    CHKERR aSsemble(row_data);
    MoFEMFunctionReturn(0);
  }

iNtegrate()

MoFEMErrorCode PoissonExample::OpError::iNtegrate ( DataForcesAndSourcesCore::EntData &  data )

privatevirtual

Integrate error.

Implements PoissonExample::OpBaseRhs< VolumeElementForcesAndSourcesCore::UserDataOperator >.

Definition at line 548 of file PoissonOperators.hpp.

                                                                  {
    MoFEMFunctionBegin;
    // clear field dofs
    data.getFieldData().clear();
    // get volume of element
    const double vol = getVolume();
    // get integration weight
    auto t_w = getFTensor0IntegrationWeight();
    // get solution at integration point
    auto t_u = getFTensor0FromVec(*fieldVals);
    // get solution at integration point
    auto t_grad = getFTensor1FromMat<3>(*gradVals);
    // get coordinates at integration point
    auto t_coords = getFTensor1CoordsAtGaussPts();
    // keep exact gradient and error or gradient
    FTensor::Tensor1<double, 3> t_exact_grad, t_error_grad;
    // integrate over
    for (int gg = 0; gg != nbIntegrationPts; gg++) {
      double alpha = vol * t_w;
      // evaluate exact value
      double exact_u = uValue(t_coords(NX), t_coords(NY), t_coords(NZ));
      // evaluate exact gradient
      t_exact_grad = gValue(t_coords(NX), t_coords(NY), t_coords(NZ));
      // calculate gradient errro
      t_error_grad(i) = t_grad(i) - t_exact_grad(i);
      // error
      double error = pow(t_u - exact_u, 2) + t_error_grad(i) * t_error_grad(i);
      // iterate over base functions
      data.getFieldData()[0] += alpha * error;
      ++t_w;      // move to next integration point
      ++t_u;      // next value of function at integration point
      ++t_grad;   // next gradient at integration point
      ++t_coords; // next coordinate at integration point
    }
    MoFEMFunctionReturn(0);
  }

Member Data Documentation

fieldVals

boost::shared_ptr<VectorDouble> PoissonExample::OpError::fieldVals

private

Definition at line 542 of file PoissonOperators.hpp.

globalError

Vec PoissonExample::OpError::globalError

private

ghost vector with global (integrated over volume) error

Definition at line 533 of file PoissonOperators.hpp.

gradVals

boost::shared_ptr<MatrixDouble> PoissonExample::OpError::gradVals

private

Definition at line 543 of file PoissonOperators.hpp.

gValue

GVal PoissonExample::OpError::gValue

private

function with exact solution for gradient

Definition at line 540 of file PoissonOperators.hpp.

i

FTensor::Index<'i', 3> PoissonExample::OpError::i

private

Definition at line 538 of file PoissonOperators.hpp.

NX

FTensor::Number<0> PoissonExample::OpError::NX

private

Definition at line 535 of file PoissonOperators.hpp.

NY

FTensor::Number<1> PoissonExample::OpError::NY

private

Definition at line 536 of file PoissonOperators.hpp.

NZ

FTensor::Number<2> PoissonExample::OpError::NZ

private

Definition at line 537 of file PoissonOperators.hpp.

uValue

UVal PoissonExample::OpError::uValue

private

function with exact solution

Definition at line 539 of file PoissonOperators.hpp.

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The documentation for this struct was generated from the following file:

• users_modules/basic_finite_elements/poisson/src/PoissonOperators.hpp